Sash-adjuster for railroad-cars



(No Model.)

A. K. MANSFIELD.

SASH ADJUSTER FOR RAILROAD GARS.

Patented Apr. 8, 1884.

Inventor.

minemw' fl/Qlw f $044 UNITED. STATES PATENT OFFICE.

ALBERT K. MANSFIELD, OF BOSTON,- MASSACHUSETTS.

SASH-ADJUSTER FOR RAILROAD-CARS.

SPECIFICATION forming part of Letters Patent No. 296,594, dated April8,1884.

Application filed December 5, 1883. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT K. MANSFIELD, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented a new and use ful Improvement in Ventilator or Deck-SashOpeners for Railroad-Cars, of which the following is a specification.

My invention relates to stops or fasteners =for openers. which are usedto open and close the sash in the raised roofof railroad-cars, in whichthe sash is pivoted and operated by means of a hanging handlepermanently attached to the car.

The object of my improvement is to provide an efficient automatic stopwhich shall hold the sash firmly open or closed, orin any intermediateposition desired. I attain this object in the manner illustrated in theaccompanying drawings, in which- Figure 1 is apian of the entire opener,showing a portion of the sash to which it is connected. Fig. 2 is a sideelevation of the opener; and Fig. 3, a sectional plan, showing the stoparrangement. Fig. 4 is a modification 0f the device.

Similar letters refer to the same parts throughout the different views.

A is the stand or frame of the opener; B, the sash operated by theopener, which is represented as open, and which is pivoted or hinged atits extreme end. (Not shown in the drawings.)

C is a hanging rod, holding the operatinghandle D at its lower end; E, acrank at the upper end of the rod, and F a connecting-rod between thecrank and the sash.

G is a collar attached to the rod 0. This collar has depressions formedon its periphery, which engage with a follower or friction-pawl, H,which is forced against the collar by the spring J. These depressionsmay be either flat or of other suitable form. They are so placed as toengage with the follower H both when the sash is closed and when it isfully open, and other depressions may be made to correspond with otherpositions of the sash, if desired.

Instead of making the depressions referred to in the collar G, they maybe made directly in the rod 0 or in the hub of the crank E; and, insteadof the spiral spring and follower, a flat spring may be attached to thestand A, having'its free end so formed as to bear directly against thecollar or other piece having the depressions. It is not necessary thatthe movement of the follower be at right angles to the axis of rotationof the collar G, for the depressions may be in the end of the collarinstead of in its periphery, in which case the follower would bearranged to move parallel to the axis of the collar.

It will be seen that the action of the springstop is entirely automatic,no movement being required on the part of the person operating theopener, except to turnthe vertical rod by means of the handle in theusual manner.

I am aware that prior to my invention sashopeners have been made withvertical operating-rods combined with apparatus forholding the sashfirmly in certain positions. I do not therefore claim such acombination, broadly; but 7 What I do claim as my invention, and desireto secure by Letters Patent, is

1. The combination, in a ventilator-opener, of the revolving rod 0, thecrank E, and connecting-rod F, with a collar, G, (or other revolvingpart,) provided with depressions to engage with a follower, H, forcedagainst the collar, all substantially as set forth.

2. In a ventilator-opener, the combination of the spring J, follower H,and the revolving collar G, with depressions, substantially asdescribed.

ALBERT K. MANSFIELD.

Witnesses:

CHARLES P. Bosron, T. L. Mansrrnnn.

